In Ireland, the company that makes Guinness stout created a holiday - Arthur's Day - to celebrate Guinness and boost sales. But some pub owners say the need for marketing events like that show how Ireland's pub culture is changing.

In Ireland, the company that makes Guinness stout created a holiday - Arthur's Day - to celebrate Guinness and boost sales. But some pub owners say the need for marketing events like that show how Ireland's pub culture is changing.

In Ireland, the company that makes Guinness stout created a holiday - Arthur's Day - to celebrate Guinness and boost sales. But some pub owners say the need for marketing events like that show how Ireland's pub culture is changing.